2006-05-21  Michael Natterer  <mitch@gimp.org>

	One of the following changes fixes a crash on exit when there is a
	cut buffer and a clipboard manager is runnig. I don't care which,
	since they are all the right thing to do:

	* app/widgets/gimpdialogfactory.c (gimp_dialog_factory_finalize):
	don't remove the factory from the hash table of all factories here...

	(gimp_dialog_factory_dispose): ...but here. Use the right key for
	the toolbox factory.

	(gimp_dialog_factories_set_busy)
	(gimp_dialog_factories_unset_busy): check the return value of
	g_type_class_ref() before using it.

	Unrelated:

	(gimp_dialog_factory_dispose): free the list of open dialogs here,
	not in dispose(). Don't leak all the factory's session infos.